While both treatments aim to restore missing teeth, the surgical protocol for pterygoid implants is distinct:
1. Site of Anchorage
Conventional implants: Placed in alveolar bone, often resorbed in edentulous patients.
Pterygoid implants: Anchored in dense pterygoid bone behind the maxilla.
2. Surgical Pathway
Conventional implants: Require vertical osteotomy in the jawbone.
Pterygoid implants: Require an angled osteotomy directed posteriorly toward the pterygoid plate.
3. Bone Augmentation
Conventional implants may need sinus lifts or bone grafts.
Pterygoid implants eliminate grafting, using naturally dense bone.
4. Loading Protocol
Both may allow immediate loading, but pterygoid implants provide enhanced stability in resorbed jaws.
5. Clinical Indications
Ideal for full-arch cases with posterior bone loss where conventional implants are not feasible.